Electric elevator.



A. ROZIER.

ELECTRIC ELEVATOR.

APPLICATION FILED JUNE 14. 1912.

Patented June 8, 1915.

2 SHEETS-SHEET 1.

$51 GMT/M13 7HE NORRIS PETERS C0,, PHoT0-LITHo.. WASHINGTON. D. cv

A. ROZIER.

ELECTRIC ELEVATOR.

APPLICATION HLED JUNE 14. 1912.

Patented June 8 1915.

2 suziTs-suz r 2.

THE NORRIS PETERS c0, PHOTG-LITHO WA H/N(-1ON, D c

ALBERT ROZIER, OF WEMBLEY, ENGLAND.

ELECTRIC ELEVATOR.

Specification of Letters Patent.

Patented June s, teas.

Application filed June 14, 1912. Serial No. 703,615.

To all whom it may concern: ,7

Be it known that I, ALBERT RozIER, a subject of the King of Great Britain and Ireland, residing at 2 Clayton avenue, Wombley, in the county of Middlesex, England, have invented a new and useful Improvement in Electric Elevators, of which the following is a specification.

My invention relates to electrically controlled lifts or elevators, and has for its objeot to provide means, automatically operated by the closing of the gate thereof or its equivalent to cause movement of the lift or elevator in the desired direction, thus obviating the necessity of the liftman closing the gate or, its equivalent and then moving a controller to operate the lift as is the practice at present.

The invention is particularly adapted for use with lifts or elevators of the kind operated by electric motors between two floors only as in underground railways, though it is of course applicable to other types of electrically controlled lifts in which the elevating power is not necessarily electricity.

To this end according to the present invention, electric switch mechanism automatically operated bythe closing of the gate or its equivalent is employed, said switch mechanism when thus operated performing the functions usually performed by the hand controller operated by the liftman, to control the various movements of the lift. A suitable selecting mechanism adapted to be set by the liftman may be placed upon the gate or its equivalent, or elsewhere in the lift to actuate the switch mechanism when the gate is closed.

To enable the invention to be fully understood it will now be described by reference to the accompanying drawings in which Figure 1 is an end view showing two sets of contacts attached to a portion of the frame of the lift above the gate, and also a portion of the lift gate having selective contact actuating means arranged according to one form of the invention; Fig. 2'is a front view of the same; Fig. 3 is a diagrammatic view showing by way of example a set of gate operated contacts connected up to elevator control circuits such as are described in the specification of prior British Letters Patent No. 20950 of 1905, for Improve-- ments in controlling devices for electric motors applicable to the motors of elevators or lifts and the like.

Referring first to Figs. 1 and 2 Above, the lift gate 1, are arranged two sets of contacts 2, 3, each consisting of four contact springs 41; connected to terminals tandpivoted at its center to a bracket 14c carried) on the gate. The end a of this lever carries a pin 15 engaging in a slot 16 inaslidefl'? adapted to be moved up or down by means of a handle 18. The slide 17 is guided in.

its movement by means of a bar 19 moving in a socket 20 on the gate. A spring pin21 i is arranged within the handle 18 and engages holes 22 in the door to lock the slide in the desired position. In the position shown in the drawings the end Z) of the lever 13, as the gate is closed engagesthe under s side of the lever 11 and raises the --same, causing the contact plate 7, to bridge the contacts in set 2[ When the slide 17 is" moved up the door, the end I; of the lever 13 is lowered out of action and the end a is raised into position to cause the correspondr ing lever 12 to bridge the contacts in set 3' when the gate is next closed. The slide 17, M

if desired may be placed in a middle onintermediate position in which case the lever 13 has no action upon either set of contacts a I k connecting up T when the gate is closed.

Fig. 3 shows the manner of v p the two sets of gate c0ntacts2, 3, hereinbefore described, to the elevator control circuits, fully described in the specification of prior British Letters Patent No. 20950 of 1905, to which reference may be had. The sets of contacts 2, 3, are merely substituted for the contacts upon switch 117 controlled by the hand lever 65 shown in said priorJ specification. The contacts 2, as here shown serve to connect up the limit switches 111,

r 112, 113, which may be placed in the elevator shaft and operated by a cam on the elevator car, or by the usual stop motion switch 109 suitably geared to the winding machinery so 7 speed,

operated lever for bridging the contacts 2 is indicated at 11. The contacts 3, serve to connect up similar cam operated limit switches 131, 132, 133, controlling the downward movementof the elevator, the gate op-' erated lever for bridging said contacts 3 be.

ing indicated at 12.

The usual switch operated by the opening of-the exit gate tobreak the control circuit is shown at 32 (Fig. v3). It will be obvious that the present invention providesa more certain method of breaking the control circuit when the gate is opened, since the circuits controlled by both sets of contacts'Q, 3 are broken as long as the gate remains open. 7 If desired, by regulating the length of the contact springs a, the order of closing of the various circuits may be regulated. In the example shown, since the sets ofcontacts 2, 3, are made practically simultaneously, the elevator will start at once on its full which is the most desirable arrangement.

tacts, and the contact selecting means being.

varied as desiredi V r I v Having now particularly. described and ascertained the nature of my invention, and in what mannerthe same is to be performed,

1 what Iclaim and desire tohave protected by Letters Patent of the United States is a 1. In an electrically controlled elevator, the combination of an elevator gate, switch mechanism adjacent the path of movement o of said gate for controlling the operation of the elevator, and manually controlled selective means arranged to operate said switch mechanism upon the closing'of the gate.

In an electrically controlled elevator, the combination of a switch for eil'ecting an upward movement of the elevator, an additional switch for effecting a downward movement of the elevator, a gate, and selective means on the gate operative upon clos- I ing said gate for effecting the operation of either of said switches at will.

3. In an electrically controlled elevator,

the combination of a switch for efi'ecting'an upward movement of the elevator, anadditional switch for effecting a downward movement of the elevator, agate, and selective mechanism on the gate movable into po-" sition to effect the operation of either of said switches upon the closing of said gate.

Copies of-this patent'may be obtainedfof and selective means for operating said device. r

5. In an electrically controlled elevator, the combination'of 'a" switch for effecting an upward movement of the elevator, an additional switch for eflecting a downward movement of the elevator, a gate, a device movable with the gate and co-acting with either of said switches upon closing the gate, selective means for operating said def vice, and means for locking said selective means in the desired positlon.

6. In an electrically controlled elevator,

the combination of a switchfor effecting an upward movement of the car, an additional switch for efl'ecting' a downward movement of the car, a gate and a'memb'er carried by- -the gate and arranged manually tobemoved into operative relation with each'of said switches whereby either one of the switches will be operated by the movement of the 'ate. r I g 7. In an electrically controlled elevator, the combination with the elevator controlling circuit, of a switch in said circuit arranged to efiect an upward movement of the car, an additional switch in said circuit ar rangedtoefiecta downward movement of ,the car, a member pivoted to, the car gate and arranged to be rotated into operative relation with each of said switches whereby one of said switches will beoperatedby closing the gate, manual means for rotating said member into a selective position, and a locking device for said manual means.

8. In an electrically controlled elevator, the combination with a controlling circuit for the car, of a car gate, aswitch; in said circuit for effecting an upward movement of the car, an additional switch in said circult for efiect ng a downward movement of the car, a member pivoted to the car gate,

manual means for moving said member from a neutral position into a position of operative relationwith either one of said switches,

and means for locking said pivoted'member in any one'of its three positions. 1 I

In testimony whereof, I have signed my name to this specification in the presence of two subscribing witnesses.

l/Vitnessesi R; H. THORPE,

M. PERRY;

five cents each, by addressing the Commissioner of Patents, Washington, D. O.

:- ALBERT ROZIER. 

